Valve



ay 6, 1947. A. SELIGMANN ETAL VALVE l t RAT. 0

,TMR m y mmmn h. wuc i m Rw Filed Aug. 11, 1944 .S NN EL AKRTHU BY ARL wIQ ATTORNEY y 6, 1947- A. S.ELIGMANN E TAL VALVE Filed Aug. 11, 1944 v 4Sheets-Sheet 2 INVENT ARTHUR SELIGMA KARL w. SCHARTEL AMTTOQ/VEY y 6,1947. A. SELIGMANN ETA]: v ,420,056

VALVE Filed Aug. 11, 1944 4 Sheets-Sheet 3 D INVENTORS Q ARTHURSELIGMANN BIfARL WSCHARTEL Ta Q1;

A TTOENEY Patented May 6, 1947 VALVE.

Arthur Seligmann,

Newark, N. J., and Karl W.

Schartel, New York, N. Y., assignors to J. H. H.

Voss, (30., Bronx,

N. Y., a partnership Application August 11, 1944, Serial No. 549,020

1 Claim. 1

This invention relates to valves. It is particularly directed to suctionand discharge or delivery valves for piston compressors such as highspeed air or gas compressors or the like devices.

An object of this invention is to provide a valve of the characterdescribed having arcual ribbontype plate valves pressed by springsagainst cylindrical valve seats and held in place by a cylindrical valveguard.

Valve construction has been known in which there is provided asubstantially cylindrical valve slot or opening forming almost acomplete circle, with a spring valve closing element adapted to closethe slot. Difficulty has been found with such valve construction becauseof the compar atively heavy single closing element which has a whiplikescraping action, severely straining its ends and causing earlydistortion and severe abrasions on the seating surfaces and the closingelement. Furthermore, such a spring-like valve closing element did notprovide for evenly divided gas flow through and around the seat andguard because such spring-like valve would not open up evenly and wouldcause closed crannies or recesses at the ends of the closing elementresulting in accumulation of dirt, carbon, and the like, which wouldimpede the proper valve action and cause loss of pumping ef iciency byholding the closing element from its proper seat. Furthermore, since theclosing element itself was a spring, tilting and twisting anddestructive scraping could not be avoided. It is therefore a furtherobject of this invention to provide a valve of the character describedin which the closing elements are arcual plates provided with separatesprings contacting each plate in two or more points to close saidplates. The arcual plates permit the division of the circumference ofthe valve seat and guard surfaces into two or more arcs, each fittedwith its closing element and its spring. With such constructioncomparatively heavy closing elements are avoided, and the valve platesdo not have whiplike scraping action and are not easily distorted.Furthermore, abrasions on the valve plate and the seating surface isavoided. With such con- Struction furthermore evenly divided gas flow isobtained through and around valve seat and valve guard. Closed cranniesor recesses and accumulation of dirt and carbon is also provided,thereby insuring proper valve action and assuring proper closing of thearcs on their seats.

Furthermore, with such construction the arcual valve plates may be madeof one metal most suitable for the purpose desired, Whereas the springsmay be made of desired spring material.

Furthermore the arcual plates may be made of a definite curvature thatdoes not change like a a spring, and the springs may be constructed toact upon the arcual plates at two or more points,

2 thus insuring even closure and avoiding tilting or twisting orscraping at the ends.

Another object of this invention is to provide in a valve of thecharacter described, a cylindrical valve seat, a valve guard frame, andseparate valve guards or racks mounted on the frame for locating theclosing elements, its springs, and their baci'zing plates. 'With suchconstruction a better alignment of all the parts relative to the seatingsurfaces is assured and also permits the valve guards or racks to bemade of heat-treated wear-resisting materials ofhigher quality and pricethan is necessary for the valve guard frame.

Yet another object of this invention is to pro vide a valve seatcomprising a cylindricaltube formed with circular rows of drilled holesforming the valve openings to be closed by the arena! valve plates.

Another object of this invention is to provide a valve of the characterdescribed provided with guide pins for guiding and preventing shiftingof the segmental valve plates.

Still a further object of this invention is to provide a valve structureof the character described which may be incorporated into a suction ordischarge valve and'with which improved valve performance is obtained,and which permits cheaper maintenance costs, and which shall yet berelatively inexpensive to manufacture, easy to 'as semble, and whichshall be sure and positive in action and efiicient and practical to ahigh degree in use.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists in the teatures of construction,combinations of elements, and arrangement of parts which will beexemplified in the construction hereinafter described, and of which thescope of application will be indicated in the following claim.

In the accompanying drawing, in which is shown one of the variouspossible illustrative embodiments or this invention,

Fig. 1 is a cross-sectional view of a suction valve embodying theinvention taken on line li of Fig. 2

Fig. 2 is a cross-sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a cross-sectional view taken on line -3 of Fig. 4 andillustrating a discharge or delivery valve embodying the invention;

Fig. 4 is a cross-sectional view taken on line 4-4 of Fig. '3;

Fig. 5 is a cross-sectional view taken on line 5-5 of Fig. 6 and showinga modified form of a suction valve embodying the invention;

Fig. '6 is a cross-sectional view taken on line 6-6 of Fig. 5;

Fig. 7 is a cross-sectional view taken on line 7--| of Fig. 5;

Fig. 8 is a cross-sectional view takenon line the surface |9a of rigidlyto the flange 8-8 of Fig. 9 and illustrating a modified form ofdischarge or delivery valve embodying the invention;

Fig. 9 is a cross-sectional view taken on line 9-9 of Fig. 8.

Referring now in detail to the drawing, and particularly to Figs. 1 and2 thereof, l designates the valve head forming part of an air or gascompressor; and II designates the valve housing for a suction valve l2embodying the invention. The housing II has an annular valve casing orwall l3 communicating with a gas or air inlet passage l4. At one end ofthe annular wall I3 is a circular flange l5 adjacent the entrance to thecompressor cylinder. The flange I5 is formed with a plurality ofequiangularly spaced screw threaded openings IS on the surface |5bthereof, parallel to the axis of said flange.

Fitted within the openings |5a formed by said flange, and extending intothe valve casing I3 is a valve seat member H. The same comprises acylindrical flange l8 received within the opening l5a, and an outwardlyextending flat annular flange l9 contacting the surface |5b of flangel5, and a generally cylindrical wall 29 disposed concentrically of walll3 and spaced therefrom. Wall 29 is formed with a plurality of circularsets of arcual slots 2| forming ribs 22 therebetween, interconnected bylongitudinal webs 23. At the rear end of wall is an annular flange 24formed with a plurality of longitudinal screw threaded openings 25. Itwill be noted that there are five webs 23 forming five arcual slots 2|in each set.

Means is provided for attaching valve seat member I! to flange l5. Tothis end there is provided a flange 25 having a flat wall 21 contactingflange l9, and a shoulder 28 overlying the flange l9. Wall 21 of theflange 2G is formed with through openings 29 to receive studs 30 screwedinto the screw threaded opening It. On each stud is a lock washer 3|contactin the flange, and screwed to the outer end of each stud is a capscrew 32. Any suitable number of studs may be provided for lockingmember I! I5 of the valve housing.

Telescoped within the valve seat member l! is a valve guard member 35.The valve guard member has a cylindrical end portion 36 which snuglyfits within cylindrical portion l8 of the valve seat member l'I.Extending from cylindrical wall 36 is a generally cylindrically shapedwall 31 formed with circular rows or sets of arcual slots 38. Betweenthe slots 38 are formed arcual ribs 39 interconnected by longitudinalWebs 40. It will be noted that the slots 38 are alignedwith ribs 22,whereas the ribs 39 are aligned with the slots 2|. The webs 40 of guardmember 35 are in alignment with the webs 23 of the valve seat member H.The outer surfaces of the ribs 39 are spaced from the inner surfaces ofthe ribs 22 and are concentric therewith for the purposes hereinafterappearing.

At the outer end of portion 31 of member 35 is an outwardly extendingannular flange 42 formed with a cylindrical shoulder 43 on which reststhe annular rim 24 of member l1. Flange 42 is formed with throughopenings 42a aligned with the openings 25 in rim 24.

Between each rib 39 and the slot 2| aligned therewith, is an arcualvalve ribbon plate 45. Each arcual plate is adapted to contact the innersurfaces of the ribs 22 on opposite sides thereof to close an opening orslot 2|. Interposed between each arcual plate 45 and the rib 39 alignedthere- .with, is a spring 49. Spring 49 may be of sinuous shape, beingprovided with a central humped portion 49a contacting the middle ofplate 45, rearwardly curved portions 49b contacting rib 39, and endportions 490 contacting the inner surfaces of the ends of plate 45. Thusspring 49 contacts the valve plate at more than one peripheral point.

Means is provided to retain the arcual valve plates 45 and the spring 49against side or end movement. To this end there is drilled on the outersurface of interconnecting web portions 40 of member 35, radial openings59 in which are press-fitted radial pins 5| projecting beyond the outersurface of wall 3'! and contacting the ends and side edges of the valveplates 45 and springs 49.

Fitted within the valve guard member 35 is a filler member 55. The samecomprises an annular flat flange 56 contacting flange 42 and formed withthrough openings 51 registering with openings 42a and 25 for receivingbolts 58 which attach the filler to the valve guard member and valveseat member. The filler member furthermore comprises a cylindricalportion 59 contacting the inner surface of rim 42 for centering thefiller. Extending from the cylindrical wall 49 is a tapering portion 60having the shape of the nose of a shell. The end of wall 69 issubstantially aligned with the most forward row of circular slots 2 I.At the rear end of the flller is a central guide ring 9| connected towall 59 by radial webs 62. On the inside of the nose of wall 60 is acylindrical flange 64 aligned with ring 6|. The purpose of the flange 64and ring 6| is to permit a pipe or rod to be inserted therethrough forlifting and fitting the valve in position within the valve housing inthe installation of the valve.

It will now be understood that air is sucked through the valve when thepressure within the compressor is reduced permitting the arcual valveplates 45 to be pressed back thereby permitting gas to pass through theslots 2| and 38 into the compressor cylinder.

It will be observed that the arcual plates 45 have uniform opening andclosing and will not scrape against the valve seat. Furthermore, sinceeach valve plate 45 extends only partially around the valve seat it isnot too cumbersome and there is no slip. Furthermore the valve plate 45can be made of one suitable material while the spring 49 is made ofanother suitable material.

Referring now to Figs. 3 and 4 the valve head It! also has a dischargeor delivery valve 10 mounted within a cylindrical casing 'llcommunicating with an outlet passage 12. Compressed air or gas passesfrom the cylinder through the valve 19 into the discharge passage 12.The valve casing H is provided with an annular flange 13 which may be inalignment with the flange l5 of the suction valve. Flange 13 is formedwith an opening or cylindrical surface 14. Received within opening 14 isa ring 1'8 formed with a flange 16a contacting the inner surface 15 offlange 13. Flange i3 is formed with a plurality of equiangularly spacedthreaded openings 13a.

Means is provided for attaching the ring 16 to flange 13. To this endthere is provided a flange TI. The same has a flat annular wall 18 and acurved shoulder 19 extending therefrom. Wall 18 contacts flange 16a. Thecurved shoulder 19 extends around the flange 16. Wall 18 is formed withthrough openings 89. Extending through the registering openings 80,1311, are studs 8| screwed to the openings 13a. On said studs are lockwashers 8|a. Screwed to the free ends of studs 8| are cap screws 82.Ring 16 is formed with an internal screw: threaded ortion. ti: a dwithzan internal. shoulder 13a. Screwed, to-the ring is. a. valve seatmember 84. Said; valve Se t member co pr ses a cy indrical 11.55 formedwith. a. screw threaded portion 86; screwed within the screw t readedopeni 83. of ring 8:6.

n cylindrical wall 85; is an annular flange 8]; Cylinder 84 isfurthermore formed with a plurality of circular rows of arcual slots;8,9 forming ribs- 90 therebetween and longitudinal interconnecting websSI. At the opposite end ofwall 1 an; e ar d flan 1 im a o flan e 81. Atthe end of wall 85; are a plurality ot screw threaded openings: atparallel to the; a is of said well.

Telescoped on member 84. is a valve guard r le-n be; 95. Member 96, iscylindrical in shape and has end portions, 91 and 98. engaging flangesa1 and 81a respectively. Between the end portions 9 1, 58 are aplurality of circular sets of arcual slotsfls forming ribs m0therebetween. The ribs I00 are interconnected by longitudinal webportions I02 aligned with webs 91. The slots 99 are aligned with theribs 98. There is a cylindrical space between the ribs tell and the ribs99 and disposed within said space are arcual valve plates I03 overlyingeach slot 89.

Each arcu-a'l valve plate IQB is. adapted to over lap the outer surfacesof a pair of adjacent ribs 90 which serve as valve seats. Interposedbetween' each arcual valve plate H33 and rib I09 is a sinuous valvespring I85. Each spring I06 has a central portion and end portionscontacting the valve plate I53 and a. pair of humped portionsoontactingthe inner surfaces of rib. till]. The outer surfaces of the webs 91, aredrilled with openings Ill! to receive pins ills. adapted tocontact theside edges, andends, of the valve plates I113 and springs I E15 toprevent either peripheral or side shifting thereof,

At one end of member 95, is an inwardly ex, tending flange [6.9contacting an, end of ember and formed with through openings ill-9caligned with the screw threaded openings 54. Screwed within said screwthreadedopenings 9% and passing through openings I990, arebolts 1 9922.

Mounted on member 84 is a. filler member IIil formed with a flange I IIhaving through openings II I a receiving the bolts I891; therethrough.Nuts II Ib on; said bolts serve to attach the filler to the valve andalso to fix the valve guard. The filler further comprises a wall H3shaped like the nose of a shell and projecting into the valve. Said wallhas a. cylindrical surface H4 contacting the inner surface of the endportion of member 85 forcentering the filler. The filler furthermore isprovided at one end with an annular ring II 5 connected to wall H3 byradial webs II 6. At the inside of the nose is a cylindrical flange H'Ialigned with ring H5. The purpose of the cy nd al fla l U of t e ring Il is also for insertion of a rod or pipe to facilitate lifting thevalvein pl e o a a i n. s it may be P o ded ith a a ial screw hr ed penin 16cto receive a set screw ber 84 against movement relative to said ring InFigs. 5, 6 and 7 there is shown a suction valve embodying the inventionand illustrating a m d d f m her In aid fi es there is shown a suctionvalve I29 ail-3 0 13 1 to flange !5 of valve head l9. Flange i5 isformed as described hereinabove, with screw threaded opening I5equiangularly spaced around said flange. said flange has a cen ral evnin nor urface 512 Attach d to danc 5 is a fr re for retaining Inein-Flange I f?! someth n trea and rear annular a d. er

times I Hand, ztin emv e ted be lon itudinal ribs 1 An ular t n 5 2 ha ainwar ly extend n m. 5. cy nd c w l Po i 26., nd an ou wardl x endingrim fla e It? h y ndr cal a 2i fits wi in eec n lig- Elange I28 contactsshoulder or surface 151;. Flange $25; is formed with an internalShoulder I29 for the purpose hereinafter appearing.

Ann ar por ion 38 i formed it anev ar y spaced longitudinal screwopenings I30. The rame i at a d o flan 512 by uds 31. a e 28! and c nstraws th same a sho n n 1 o the l i vi e-v T ped W thi t frame 13 s aWi l mem e 5, The same om ses a metal tube formed with circular rows ofspaced sets of open..- ne 3- fi w n th s f, open n s in a circular rowsare portions 53691, which do not h e h s n em thus .f mine lo itudinalribs between arcual rows of openings. One, end 6f tube '3 nt s sh ul r 3wherea the other end thereof contacts the inner cylindrical surfacei230; of annular portion 42-3 of frame l? I. The ribs 24 a e om wh se dfrom the ube. which is centered by the shoulder I29 and surface (23a.Ribs I21; are aligned with portion Idea of tube I35. The openings of ech t form an arcual'valve opening, as will appear hereinafter.

a s i of t i ngular ro s-s t o may e inserted in beveled corners formedat the ends r ub 35 i de r h in r nd f ope ings gee may be 'eountersunkas shown in the drawing.

ttached t fram I33 a fi l r memb r 140. The m om ris s n e d wall It! haing a dense I c tac i e t e ear end of frame I21. .42 i fo med w h op nig 43 e ister log with the screw threaded openings I30 in the rame. 5 itp sthrough ope gs I 43 n a e s ew d, int ope i gs, 53% for attach n hefil e t th ram Ex endin from th a w ll 14 s a tapered wall I46 shapedlike the nose of a shell and projecting into the tube 135. Extendingfrom wall 14s ar a. p u ality Of radial webs ha i outer longitudinalsurfaces Ids curved transversely and all disposed within a commoncylindrical P an seate from the in er urface of t I3 Mounted on eachsurface I48 is a longitudinal valve guide member I50. Each valve guidemember I50 is attached toa web I41 by flat head screws I5I or otherfastening means at the ends thereof. Member I 50, is provided with aplurality of trans.- verse slots I52. The slots I52 are aligned with therows of open ngs i36- It will be n ed that portions I36a of tube I35 arein ali nment with the valve guides {59. The bottom surfaces of slots I52are formed with central drilled openines n. which. re. times. fittedupstanding n I 5 pr j cting up rdly nt aid Slots I52. tast g he i ner rac o e I35 a e a cua valve ri bon p a e 4 ea h u r y ng he a ae ow of inI 3. The n s of a h valve pla e I 4 e eaewi ia s t 52 i a Pa r ofdiaeent valve ui e h p e 3 Ser t ere eet en w e mo m t f the v v a e whea i e shif il g vi th al Pl P v nte by h si W le of s ots '5 I also. nounted between the valve guides I50 are new v ve pla am e whi h arealreceived in slots [52. 'Interposed between arcuate valve plates I 54 andthe valve supports I'Efiar-e sinuous shar d springs 1.5.6 serving to i sthe valve. plates." I54 agains the l e ope ng 1136- Co I It will now beunderstood that the pins I53 are interposed between adjacent sets ofvalve plates and springs. valve plate support. It will now be understoodthat when the pressure in the cylinder is below that in the entrancepassage, the valve plates I54 will be pressed back against the springsI56 to permit passage of air or gas through the valve openings I36.

It will be noted that the frame member I2I and valve seat are twoseparate members. The advantage of this construction is that the valveseat can be made of wear-resisting material such as stainless steel.There is furthermore, a great saving and simplification in machining, inthe construction of Figs. 5, 6 and 7, since the valve seat member can bemade of tubular stock.

In Figs. 8 and 9 there is shown a discharge valve embodying theinvention and illustrating a modified form thereof. In Figs. 8 and 9there is shown a discharge valve I66 mounted in valve casing 1 I. Thevalve casing H as desc bed hereinabove, has an annular flange 13 formedwith an annular opening 14 and an internal surface 15. Attached toflange 13 is a frame I2 Ia substantially similar to frame I2I shown inFig. 5. The same comprises annular end members I62 and I63interconnected by longitudinal ribs I64, and said frame is attached toflange 13 by means of studs 36, flange 38, and cap nuts 32 in the samemanner as illustrated in Figs. 5, 6 and '1 of the drawing.

Attached to frame I2Ia is a filler membe I65 comprising a back wall I66formed with an outwardly extending flange I61 contacting annular portionI63 of the frame. The filler is attached to the frame by means of boltsI68 passing through openings I61a in flange I61, and screwed withinthreaded openings I 63a in annular rim or ring I63. The filler I65 isformed with a tapered shell or wall I16 extending from wall I66. On theinner side of flange I61 is annular groove I12 forming an internalcylindrical surface I13. Portion I62 of frame I2Ia is formed with anannular internal shoulder I14 forming a cylindrical surface I 62aaligned with surface I13.

Fitted within groove I12 is one end of a tubular valve seat member I15.One end of said tubular member contacts surface I62a and fits withinshoulder I14. Said valve seat member has beveled outer corners toreceive gaskets I16. Said valve seat member is attached to ring I62 bymeans of aligning screws I11. It is formed with circular rows of arcualsets of openings I18. The rows of openings I18 are interrupted byportions I19 which do not have openings, said portions being alignedwith the ribs I64 of frame I2Ia, thus forming arcual rows of valveopenings for the purpose hereinafter appearing.

Attached to and superimposed on the inner surface of ribs I64 arelongitudinal valve guide members I86 each formed with a plurality oftransverse slots I8I aligned with the segmental rows of openings I18.Each valve guide member I86 is attached to frame I2Ia by means of a pairof long rivets I82 passing through the bottom surface I8Ia of an endslot I8I and through annular portion I63 of said frame member; and alsoby means of a pair of short rivets I85 passing through the bottomsurface of a slot I8I at the other end of the valve guide member, andpassing through the portion I62 of said frame member. The bottoms of theslots I8I are furthermore formed with central drilled through openingsI86, and press fitted thereinare radial pins I81 projecting outwardlyinto said slots.

Said pins pass through holes in the Supported and guided by the valveguide members I86 are arcual valve plates I66, each overlying an arcualrow or set of openings I18. The ends of each valve plate are receivedwithin slots I8I of a pair of adjacent valve guide members I86. The pinsI81 prevent endwise shifting of the valve plates I66. Side shifting ofthe valve plates is prevented by side walls of the slots I8I.

Also supported by and between the valve guides I are annular backingsupports I9I extendin through the slots I8 I Interposed between plateI96, I9I are sinuous shaped springs I92 which serve to bias the valveplates I96 against the valve seat member to close the valve openingsI18. When pressure within the compressor cylinder exceeds apredetermined pressure, the valve plates will open permitting passage ofair or gas through the openings I18.

It will thus be seen that there is provided a device in which theseveral objects of this invention are achieved, and which is welladapted t meet the conditions of practical use.

As various possible embodiments might be made of the above invention,and as various changes might be made in the embodiment above set forth,it is to be understood that all matter herein set forth as shown in theaccompanying drawing is to be interpreted as illustrated and not in alimiting sense.

Having thus described our invention, we claim as new and desire tosecure by Letter Patent:

A valve comprising telescoping cylindrical valve seat and valve guardmembers, said valve guard and valve seat members having cylindricalcontacting surfaces at the ends thereof and concentric spacedintermediate portions, said valve seat member being formed withperipherally arranged arcual openings, said valve guard being formedwith ribs aligned with said arcual valve openings, arcual valve platesto close said openings, a separate spring for each valve plate, saidsprings being interposed between the valve plates and the ribs, a fillermember within the inner of said members, having a nose'portionprojecting into said inner of said members, said valve seat member,valve guard member, and filler having flanges formed with registeringopenings, and fastening means extending through said openings forattaching the filler, valve guard member, and valve seat membertogether.

ARTHUR SELIGMANN. KARL W. SCHARTEL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,968,865 Belyavin Aug. '7, 19341,693,619 Sandford Dec. 4, 1928 2,291,944 Collins Oct. 6, 1942 1,726,993Belyavin July 16, 1929 1,911,939 Belyavin May 36, 1933 1,324,137Wikander Dec. 9, 1919 1,414,665 Parsons May 2, 1922 878,964' Slick Feb.11,1908 1,829,954 Erskine Nov. 3, 1931 1,413,059 Riesner Apr. 18, 1922FOREIGN PATENTS Number Country Date 636,363 Germany May 26, 1936 34,290Germany Jan.'5, 1886

